综放面沿空掘巷的支护技术分析

Andysis on Support Techinque of Rockstrata arourd Road Driving for Next Goaf in Fully-mechanized Top-Coal Caving Workface

概述综放面沿空掘巷的矿压显现特点和综放面沿空掘巷的支护现状 ,并对控制沿空巷道围岩大变形的技术关键、锚杆支护机理及支护措施进行了分析。就现有的支护技术而言 ,锚杆与注浆加固的联合支护技术 ,一方面加固了沿空巷道周边的破裂岩体 ,提高了围岩的自承能力 ;另一方面 ,改善了破碎岩体的结构和力学性能 ,为锚杆支护提供了可靠的物质基础。从力学观点看是综放沿空掘巷支护的最佳形式之一。

This article describes that features of mechanical behavior and support situation of rockstrata around road driving for next goaf in fully-mechanized workface,analyzes technical key in control out of shape of roadway rockstrata,belt mechanism and support measure.Today in techmique of support combined support with bolt and grouting rein forcement,at first,crack rock in rockstrata around road for next goaf is reinforced,support capacity is improred beside,structure and mechanices function of crack rock is also improved.It Provides reliable meterial base for bolting.From mechanics viewpoint,it is the best way to rockstrata around road driving for next goaf in full-mechanized workface.